<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        //function number(){
          //  let a=2;
            //let b=34;
            //document.write(a+b)
        //}
        //number()

          //function sum(){
            //let sum=0;
            //for(let i=1;i<=100;i++){
              //  sum+=i
            //}
            //document.write(sum);
        //}
        //sum()
 
        //传参
        //function sun(num1,num2){
          //  document.write(num1+num2);
        //}
          //   let num1=+prompt();
            // let num2=+prompt();
        //sun(num1,num2)

        function s(a,b){
        let sum=0;
        for(let i=a;i<=b;i++){
            sum+=i;
            document.write(sum)
      document.write('<br>')
        }
    }
        s(50,100)


      
    </script>
</body>
</html>